Wiring Harness for 2014 Mazda 6 | OEM Vehicle Parts Home 2014 Mazda 6 Wiring Harness. Wiring Harness for 2014 Mazda 6. 2014 Mazda 6 Change Vehicle. Categories. All; Parts; Accessories; Air & Fuel Delivery. Fuel Injection System & Related Components; Gaskets & Sealing Systems; Audio/Video. Navigation; Automatic Transmission. Automatic Transmission; Gear Shift Control; 2014 Mazda 6 Hopkins Plug-In Simple Vehicle Wiring Harness Today we're going to review number HM11140254. This is the Hopkins Plug-in Simple Vehicle Wiring Harness with the four way flat trailer connector. This is a custom fit part. It is designed to fit the Mazda Six vehicle starting in 2014.Category: Custom Fit Vehicle Wiring 2014 Mazda 6 Trailer Wiring | etrailer Lowest Price Trailer Wiring Guarantee. Installation instructions and lifetime expert support on all purchases of 2014 Mazda 6 Trailer Wiring. Order online at etrailer or call 800-298-8924.